Select all expressions that could be equivalent to x2 + bx - 36 where b is negative.
(x + 3)(x - 12)
(x - 2)(x + 18)
(x - 13)(x - 3)
(x + 4)(x + 9)
(x - 9)(x + 4)

A)a square brown tarp has a square green patch green in the corner the side length of the tarp is (x + 8) and the side length of the patch is x what is the area of the brown part of the tarpb)a square red placemat has a gold square in the corner the side length of the gold square is (x - 2) inches with the width of the red region is 4 in what is the area of the red part of the placemat